[問題]GWD19-06

[magic]

Q6:
An analyst will recommend a combination of 3 industrial stocks, 2 transportation stocks, and 2 utility stocks. If the analyst can choose from 5 industrial stocks, 4 transportation stocks, and 3 utility stocks, how many different combinations of 7 stocks are possible?

A. 12
B. 19
C. 60
D. 180
E. 720
答案是D

請各位大大交一下
我有點看不懂題目^^"

[StanleyHuang]

某股票老師要推某個投資組合，這個組合包含了3家工業類，2家運輸類以及2家公用事業類公司的股票。
如果工業類的有5家可以選，運輸類的4家，公用事業類的3家，那麼這個老師可以做出多少種投資組合？

算法就 C(5,3) * C(4,2) * C(3,2) = 180

[magic]

謝謝^^